Cheat Engine. A development environment focused on modding games and applications for personal use.

For the latest version:

For older versions, check out https://github.com/cheat-engine/cheat-engine/releases

The forum is up/down depending on DDoS attacks. In the chance it works, you can read posts at http://forum.cheatengine.org/

Alternate websites: http://reddit.com/r/cheatengine

http://fearlessrevolution.com/index.php

You can also follow cheat engine on twitter: https://twitter.com/_cheatengine